Dumping mechanism for road-graders



- AJ'N. DAYWITT. DUMPING MECHANISM FOR ROAD GRADERS.

APPLICATION FILED SEPT. 13, 1920.

Patented May 31, 11921.

mlllllllllllllllllllllm INVENTIOR. ALBERT Al. DAYW/TT A TTORNE Y.

Unit ears ALBERT N. DAYWETT, 01 FRANKFOBT, INDIANA.

invents.

Specification of Letters Patent.

Patented May 31, 1921.

Original application filed December 1, 1919, Serial No. 341,715. Divided and this application filed Sepi tember 13, 1920. Serial No. 489,991.

T 0 all whom it may concern:

Be it known that I, ALBERT N. Dnrwrrr, a citizen of the United States, residing at Frankfort, in the county of Clinton and State of Indiana, have invented certain new and useful Improvements in Dumping Mechanism for Road-Graders, of which the following is a specification.

This invention relates to dumping mech anism and is designed primarily for use in connection with a road grader wherein the dirt taken up by the grader is deposited in a bed, and is a division of a'prior application filed December 1, 1919, Serial No. 341,715.

A feature of the present invention is the provision of a false or movable bottom for.

a dumping bed, together with means for operating said bottom so that it can be moved laterally to discharge the contents of the bed.

A further feature of the invention is to so arrange the levers employed for operating the movable bottom that they will securely lock the movable part in position below the opening in the bed while the bed is being filled or moved from place to place, an operating lever being so positioned that the driver can readily grasp the same and operate the dumping parts without leaving his seat, said dumping parts being so arranged that they may be readily operated although positioned adjacent the ground.

Other objects and advantages will be hereinafter more fully set forth and pointed out in the accompanying specification.

In the accompanying drawings which are made a part of this application,

Figure 1 is a side elevation of a road grader construction showing the dumping means in closed position,

Fig. 2 is a rear end elevation thereof, and

Fig. 3 is a view similar to Fig. 2 with the parts operated for dumping the contents from the bed of the grader.

Referring to the drawings in which similar reference numerals designate corre sponding parts throughout the several views, 1 indicates a frame which is supported upon wheels 2 and 3; mounted between the rear portion of the frame 1 is a bed 4 of any preferred construction the bottom 5 thereof preferably tapering inwardly and downwardly, a portion of the bottom being removed to provide a discharge opening 6 for the contents of the bed, said opening es:- tending longitudinally of the bed and preferably to one side of the vertical center of the bed.

Cooperating with the opening 6 is a false bottom 7 which is adapted to be positioned over the opening 6 when the bed is being filled or transported, and to be in ved laterally to one side of the opening 6 when the contents of the bed is to be discharged.

The ends of the false bottom '7' are attached to the arms 8 of brackets 9, and these brackets are in turn attached to shaft 10 extending longitudinally of the frame 1 and having bearings thereon.

The shaft 10 is rotated preferably through the medium of a lever 11 which is so positioned that the driver may easily reach the same from the seat 12, and when the lever is thrown in. one direction the bottom 7 will be swung laterally from over the opening 6, and when moved in the opposite direction will be returned to position over the opening and prevent dirt, etc., from descending therethrough. The bottom 7 is held against swinging movement by levers 13 and 14 which are pivoted together at one end and pivoted at their opposite ends to the bed and one of the arms 8 respectively, and when said levers are positioned in a straight line with each other the bottom 7 will be held against swinging movement. The levers 13 and 1d are operated to swing the bottom 7 to open position through the medium of links 15 and 16, link 15 being fixed at one end to the shaft 10 and pivoted at its opposite end to one end of the link 16, and the other end of the link 16 is pivoted in turn to the levers 13 and 1% at their point of pivotal connection. By arranging the levers 13 and 1d and links 15 and 16 in this manner they will have a toggle action when the shaft 10 is rocked back and forth, thereby positively moving the bottom 7 to open or closed position, and so long as the levers 13 and 14:, and links 15 and 16 are in proper alinement with each other with the links substantially at right angles to the trend of the levers, the bottom 7 will be locked in closed position. In implements of this class it is necessary, owing to the class of work which they perform, to have the bottom of the beds in close proximity to the ground, and consequently a limited space is left for the operating of the dumping parts, and owing to the fact that the false bottom moves laterally and upwardly when moving to open position, it

are attached, a pair of toggle levers pivoted together at one end and having their opposite ends pivoted respectively to said bed and said brackets, links pivotally secured together and having their ends connected respectively with said shaft and said levers,

and means for rotating said shaft for operating said links and levers for releasing and moving said false bottom to open or closed position.

2. The combination with a vehicle body having a discharge opening in the bottom portion thereof, ofa false bottom for covering said opening,'a shaft extending longitudinally of said body, means for suspending the false bottom from said shaft, a link fixed to said shaft, a second link pivoted to the first link, a pair of levers pivoted together at one end and to the second link, the opposite ends of said levers being pivoted respectively to said body and said false bottom, whereby said levers and links Willhold the false bottom in closed position or swing the false bottom laterallyont of registration with the opening in the body when said shaft isrotated, and a hand operated lever for rotating said shaft. i

in witness whereof, I have hereunto set my hand and seal at Indianapolis,:lndiana, this 9th day of September, A. D. nineteen hundred andtwenty.

ALBERT N. AYWITT. [L s.] Witnesses CAREY S. FRYE, M. L. VSHU'LER. 

